Hi Saphie
If your director agrees that his alcoholism is a problem and is affecting his job and the workplace... He can always refer him to EAP.
I sort of started this recovery because of a workplace issue. It can be very effective. And if he is referred, then he'll be in treatment and the worry about pushing him over the edge... Well, he'll have a place to land!!
Good luck... It must be hard to watch someone suffer like that.
Mark